Mean (with 95% CI) Post-Traumatic Stress Scale Self-report severity at baseline, 1-week post-treatment, 3-, 6- and 12-month follow-up for the intention-to-treat sample (N=353). Study phase refers to in-treatment (baseline to 1-week post-treatment) versus over the follow-up period (3-, 6- and 12-months post-treatment). There is a significant study phase by treatment by time interaction effect (χ2(1)=4.18, p-value = .04). PSS-SR=Post-traumatic Stress Scale Self-report (Foa et al., 1993).